The options in question did not expire until 2025.
The above transaction is in addition to: the $300K exercise-and-hold in Sep 2019 (#msg- 151441695); the $270K exercise-and-hold in Jun 2019 (#msg-149617660); the $250K exercise-and-hold in Mar 2019 (#msg-147373277); and the $150K exercise-and-hold in Jan 2019 (#msg-146329304).
All told, that comes to $1.1M of cumulative exercise-and-hold transactions during 2019 by this ENTA executive officer.
Separately, ENTA’s CEO exercised-and-held $410K of stock in Oct 2019 (#msg-151617214).